<template>
    <div >
        <el-form :inline="true" :model="studentForm" class="demo-form-inline">
            <el-form-item label="学生年龄">
                <el-input v-model="studentForm.age" placeholder="学生年龄"></el-input>
            </el-form-item>
            <el-form-item label="学生姓名">
                <el-input v-model="studentForm.name" placeholder="学生姓名"></el-input>
            </el-form-item>
            <el-form-item>
                <el-button type="primary"  icon="el-icon-search" @click="searchWeather">查询</el-button>
                <el-button type="danger" icon="el-icon-remove"@click="piliangdelete">批量删除</el-button>
                <el-button type="success" icon="el-icon-circle-plus" @click="insertStudent">添加</el-button>
            </el-form-item>
        </el-form>

        <el-table
                :data="students"
                border
                @selection-change="handleSelectionChange"
                style="width: 100%">
            <el-table-column
                    type="selection"
                    width="55">
            </el-table-column>
            <el-table-column
                    prop="sname"
                    label="学生姓名"
            >
            </el-table-column>
            <el-table-column
                    prop="gender"
                    label="性别">
            </el-table-column>
            <el-table-column
                    prop="sage"
                    label="年龄">
            </el-table-column>
            <el-table-column
                    prop="stuno"
                    label="学号"
            >
            </el-table-column>
            <el-table-column
                    prop="cclass.cname"
                    label="学生班级">
            </el-table-column>
            <el-table-column>
                <template slot-scope="scope">
                    <el-button type="success" size="small" icon="el-icon-edit" @click="editStudent(scope.row)">编辑</el-button>
                    <el-button type="danger" size="small"  icon="el-icon-delete" @click="del(scope.row)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>

        <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="currentPage"
                :page-sizes="[3,6,9]"
                :page-size="5"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
        </el-pagination>

        <el-dialog
                title="修改学生"
                :visible.sync="dialogVisible"
                width="30%"
        >
            <el-form ref="form" :model="editStudentForm" label-width="80px" >
                <el-form-item label="学生姓名">
                    <el-input v-model="editStudentForm.sname"></el-input>
                </el-form-item>
                <el-form-item label="年龄">
                    <el-input v-model="editStudentForm.sage"></el-input>
                </el-form-item>
                <el-form-item label="性别">
                    <el-input v-model="editStudentForm.gender"></el-input>
                </el-form-item>
                <el-form-item label="学号">
                    <el-input v-model="editStudentForm.stuno"></el-input>
                </el-form-item>
                <el-form-item label="班级">
                    <el-select v-model="editStudentForm.cid" placeholder="请选择班级">
                        <el-option
                                v-for="item in cclass"
                                :key="item.id"
                                :label="item.cname"
                                :value="item.id">
                        </el-option>
                    </el-select>
                </el-form-item>
                <el-form-item size="large">
                    <el-button type="primary" @click="updateStudent">确认修改</el-button>
                    <el-button @click="dialogVisible=false">取消</el-button>
                </el-form-item>
            </el-form>
        </el-dialog>

        <el-dialog
                title="添加学生"
                :visible.sync="dialogVisible2"
                width="30%"
        >
            <el-form ref="form" :model="editStudentForm" label-width="80px" >
                <el-form-item label="学生姓名">
                    <el-input v-model="editStudentForm.sname"></el-input>
                </el-form-item>
                <el-form-item label="年龄">
                    <el-input v-model="editStudentForm.sage"></el-input>
                </el-form-item>
                <el-form-item label="性别">
                    <el-input v-model="editStudentForm.gender"></el-input>
                </el-form-item>
                <el-form-item label="学号">
                    <el-input v-model="editStudentForm.stuno"></el-input>
                </el-form-item>
                <el-form-item label="班级">
                    <el-select v-model="editStudentForm.cid" placeholder="请选择班级">
                        <el-option
                                v-for="item in cclass"
                                :key="item.id"
                                :label="item.cname"
                                :value="item.id">
                        </el-option>
                    </el-select>
                </el-form-item>
                <el-form-item size="large">
                    <el-button type="primary" @click="saveStudent">确认添加</el-button>
                    <el-button @click="dialogVisible2=false">取消</el-button>
                </el-form-item>
            </el-form>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        name: "Students",
        data(){
            return{
                //存放所有班级
                cclass:[],

                studentForm:{},
                editStudentForm:{},
                insertStudentForm:{},
                students:[],
                currentPage:1,
                pageSize: 3,
                total: 0,

                //表格多选项
                multipleSelection:[],

                //编辑对话框的显示和隐藏
                dialogVisible:false,
                dialogVisible2:false,
            }
        },
        created(){
            //从新加载页面
            this.searchWeather();
            //查询所有班级
            this.loadAllClass();
        },methods:{
            //添加学生
            saveStudent(){

                this.axios.post("http://localhost:8080/insert/",this.editStudentForm).then(result=>{
                    //console.log(result)
                    if(result.data.code===200) {
                        this.$message.success(result.data.msg);
                        //关闭对话框
                        this.dialogVisible2=false;
                        //刷新页面
                        this.searchWeather();
                    }
                })
            },
            //批量删除
            piliangdelete(){
                this.axios.post("http://localhost:8080/batchDelete/",this.multipleSelection).then(result=>{

                    if(result.data.code===200) {
                        this.$message.success(result.data.msg);
                        //刷新页面
                        this.searchWeather();
                    }
                })
            },
            //表格左侧多选获取
            handleSelectionChange(val){
                this.multipleSelection=val;
                //console.log( this.multipleSelection)
            },
            //修改学生信息
            updateStudent(){
                this.axios.put("http://localhost:8080/update/",this.editStudentForm).then(result=>{
                    console.log(result);
                    if(result.data.code===200){
                        this.$message.success("修改成功");
                        //关闭对话框
                        this.dialogVisible=false;
                        //刷新页面
                        this.searchWeather();
                    }
                })
            },
            //加载所有班级
            loadAllClass(){
                this.axios.get("http://localhost:8080/list/").then(result=>{
                    // console.log(result);
                    this.cclass=result.data.data;
                    //console.log(this.cclass);
                })
            },
            searchWeather(){
                this.axios.post("http://localhost:8080/find/"+this.currentPage+"/"+this.pageSize,this.studentForm).then(result=>{
                    //console.log(result);
                    this.students=result.data.data.records;
                    this.total=result.data.data.total;
                })


            },
            //改变每页的条数时触发该方法
            handleSizeChange(val) {
                this.pageSize=val;
                this.searchWeather();
            },
            //改变当前页码时触发的方法
            handleCurrentChange(val) {
                this.currentPage=val;
                this.searchWeather();
            },
            del(row){
                let numstuno=row.id;
                this.axios.delete("http://localhost:8080/deleteById/"+numstuno).then(result=>{
                    if(result.data.code===200){
                        this.$message.success("删除成功") //弹出成功的消息框
                        this.searchWeather(); //重新加载表格
                    }
                })
            },
            editStudent(row){
                this.dialogVisible=true;
                this.editStudentForm=row;
            },
            insertStudent(){
                this.editStudentForm=[];
                this.dialogVisible2=true;
            }
        }
    }
</script>

<style scoped>

</style>